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为明确偏心率不同时平扭周期比的实际控制效果,给出了高层建筑结构平扭周期比、振型扭转因子的简化计算方法,进而对其影响因素和变化规律进行了分析。结果显示,偏心率变化会影响建筑结构的振动特征,甚至可能改变结构的振动方向;某些情况下平扭周期比数值大小与结构规则程度并不相符,偏心率增加时平扭周期比反而减小。
In order to clarify the actual control effect of the ratio of flat to torsional period at different eccentricities, a simplified calculation method of flat-to-twisted periodic ratio and torsional torsional moment of high-rise building structures is given, and the influencing factors and changing rules are also analyzed. The results show that the change of eccentricity will affect the vibration characteristics of the building structure and may even change the vibration direction of the structure. In some cases, the flat-torsional period is not in accordance with the numerical value and the structural regularity degree, but the flat-torsional period ratio decreases with increasing eccentricity .